Grain-drill attachment



H. ZARMSTORF.

GRAIN DRILL ATTACHMENT.

APPLICATION FILED 'APR.14. 1920.

Patented 001. 4, 1921.

III/l. A

carica HENRY ZARMSTORF, OF FLINT, MICHIGAN.

GRAIN-DRILL. ATTACHMENT.

incense.

Application filed April 14, 1920.

To all 'whom t may concern Be it known that I, HENRY ZARMsronr, acitizen of the United States, residing at Flint, in the county ofGenesee and State of Michigan, have invented certain new and usefulImprovements in a Grain-Drill Attachment, of which the following is aspeciiication. Y

This invention relates to attachments to grain drills and similardevices, for controlling the depth which the furrow opening elementsshall operate, and has for one of its objects to improve theconstruction and increase the efficiency and utility of devices of thischaracter.

Another object of the invention is to produce an attachment of thisclass which may be applied, without material structural change to graindrills and like devices, of various constructions.

With these and other objects in view, the invention consists in certainnovel features of construction as hereafter shown and described and thenspecifically pointed out in the claims.

The improved device may be adapted to various. forms of grain drills,corn planters and like implements, but is more particularly applicableto disk grain drills, and for the purpose of illustration is shownapplied to one of the disk carrying arms of an implement of this class,and in the drawings employed for illustration.

Figure 1 is a side elevation, partly in section, of a portion of aconventional disk drill, with the improved depth controlling deviceapplied thereto.

F ig. 2 is a detail illustrating the construction of one of the clipdevices.

The main frame of the drill is represented at 10, the seed box at 11,the seed tubeat 1-2, one of the draw bars at 13, and one of the disks at14.

The improved attachment comprises an arm 15 curved at the lower part asshown at 16 to form a shoe like element to travel upon the groundindicated at 17, adjacent the disk, to limit the depth to which thelatter shall operate.

Specification of Letters Patent.

Patented Uct. 4, 1921. Serial No. 373,899.

The arm 15 is pivoted at 18 to the bar and is provided with a pluralityof apertures 19 for the pivot 1S, to enable the arm to be adjust-ablycoupled to the draw bar.

Slidable on the draw bar is a sleeve 20 having a set screw 21 to enablethe sleeve to be adjustably coupled to the draw bar.

Pivoted at 22 and 23 respectively to the sleeve and arm is a link 24. Bythis means the inclination of the arm 15 may be readily controlled toadjust the earth engaging portion 16 relative tothe furrow openingelement.

By this means the furrow opening element may be easily gaged to operateat any required depth.

The device is simple in construction, inexpensive to manufacture, andoperates efectually for the purpose described.

The preferred embodiment of the invention is disclosed in the drawingsand set forth in the specifications, but it will be understood that anymodifications within the scope of the claims may be made in theconstruction without departing from the principle of the invention orsacrificing any of its advantages.

I claim: n

1. An attachment for grain drills comprising an arm adapted to bepivotally coupled intermediate its ends to the draw bar of a furrowopening element and having an earth engaging' terminal, a sleeve adaptedto be adjustably coupled to the draw bar, and a link attached to thesleeve and to the arm.

2. The combination with a ,grain drill including a draw bar carrying afurrow opening element, of an arm movably coupled in termediate its endsto the draw bar and having an earth engaging portion coacting with thefurrow opening element, a member slidable on the draw bar, means forlocking said slidable member to the draw bar, and a link connecting theslidable member and the arm.

In testimony whereof I aiX my signature hereto.

HENRY zARMsToRF.

